Main Title |
Determination of Cloud Parameters for NEROS II from Digital Satellite Data. |
Author |
Behunek, J. L. ;
Vonder Haar, T. H. ;
Laybe, P. ;
|
CORP Author |
Colorado State Univ., Fort Collins. Dept. of Atmospheric Science.;Environmental Sciences Research Lab., Research Triangle Park, NC. |
Year Published |
1984 |
Report Number |
EPA-68-02-3731; EPA-600/3-84-044; |
Stock Number |
PB84-162601 |
Additional Subjects |
Air pollution ;
Photochemical reactions ;
Cumulus clouds ;
Oxidizers ;
Artifical satellites ;
Identifying ;
Infrared mapping ;
Heights ;
Radiosondes ;
Statistical analysis ;
Frequency distribution ;
NEROS 2 satellite
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB84-162601 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
50p |
Abstract |
As part of the input for their regional-scale photochemical oxidant model of air pollution, known as the Regional Oxidant Model, requires statistical descriptions of total cloud amount, cumulus cloud amount, and cumulus cloud top height for certain regions and dates. These statistics are used to parameterize photochemical reactions, and to diagnose vertical transport of pollutants. The purpose of this work was to derive these statistics from digital satellite data. The first stage of the work was to apply a human-computer interactive technique to satellite data to distinguish cumulus clouds from clouds of other types, and to produce the cloud amount statistics for cells within specified grids. Next, the interactive technique was applied to the infrared data to calculate the mean cloud top temperature for each cell. Those mean temperatures were then converted to heights by referring to objectively analyzed temperature versus height information derived from radiosonde data. A frequency distribution of cumulus cloud top heights was also produced for some cases. |
NTIS Title Notes |
Final rept. 30 Sep 81-30 Mar 83. |
PUB Date Free Form |
Mar 84 |
Category Codes |
4B; 9B; 68A; 55C |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/09 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
413223391 |
Origin |
NTIS |
Type |
CAT |